Synthesis and properties of polyimides based on isomeric (4, 4 '-methylenediphenoxyl) bis (phthalic anhydride)s (BPFDAs)

	Synthesis and properties of polyimides based on isomeric (4, 4 '-methylenediphenoxyl) bis (phthalic anhydride)s (BPFDAs)
	Li Y ; Wang Z ; Li GJ ; Ding MX ; Yan JL
刊名	journal of polymer research
	2012
卷号	19 期号:1 页码:文献号: 9772
关键词	2 3 POLYETHERIMIDES 3' POLYMERS 4'-BIPHENYLTETRACARBOXYLIC DIANHYDRIDE
ISSN号	1022-9760
通讯作者	yan jl
中文摘要	isomeric (4, 4'-methylenediphenoxyl) bis (phthalic anhydride)s (bpfdas) were synthesized and their structures were determined via ir spectra and h-1 nmr. polyimides were then prepared from isomeric bpfdas and aromatic diamines in n, n-dimethylacetamide (dmac) via the conventional two-step method. polyimides based on 3, 3'-bpfda are soluble in common organic solvents at room temperature, while polyimides based on 4, 4'-bpfda were only partially soluble in high-boiling-point solvent even upon heating. the 5% weight-loss temperatures (t-5%) of these polyimides were in the range of 430-500 degrees c in air. dynamic mechanical thermal analysis (dmta) indicated that the glass-transition temperatures of polyimides from 3, 3'-bpfda are around 10-20 degrees c higher than those of polyimides from 4, 4'-bpfda. the wide-angle x-ray diffraction showed that all polyimides are amorphous.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000300772600021
公开日期	2013-06-30
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48635]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li Y,Wang Z,Li GJ,et al. Synthesis and properties of polyimides based on isomeric (4, 4 '-methylenediphenoxyl) bis (phthalic anhydride)s (BPFDAs)[J]. journal of polymer research,2012,19(1):文献号: 9772.
APA	Li Y,Wang Z,Li GJ,Ding MX,&Yan JL.(2012).Synthesis and properties of polyimides based on isomeric (4, 4 '-methylenediphenoxyl) bis (phthalic anhydride)s (BPFDAs).journal of polymer research,19(1),文献号: 9772.
MLA	Li Y,et al."Synthesis and properties of polyimides based on isomeric (4, 4 '-methylenediphenoxyl) bis (phthalic anhydride)s (BPFDAs)".journal of polymer research 19.1(2012):文献号: 9772.